 <!-- 登录 -->
 <div class="login">
  <div class="login-wrap">
      <div class="avatar">
          <img src="assets/uploader/monkey.png" class="img-circle" alt="">
      </div>
      <form action="" class="col-md-offset-1 col-md-10" (ngSubmit)='login()'>
          <div class="input-group input-group-lg">
              <span class="input-group-addon">
                  <i class="fa fa-user"></i>
              </span>
              <input type="text"
              class="form-control"
              name="tc_name"
              placeholder="用户名"
              [(ngModel)]="username">
          </div>
          <div class="input-group input-group-lg">
              <span class="input-group-addon">
                  <i class="fa fa-key"></i>
              </span>
              <input type="password"
              class="form-control"
              name="tc_pass"
              placeholder="密码"
              [(ngModel)]="password">
          </div>
          <button type="submit" class="btn btn-lg btn-primary btn-block">登 录</button>
      </form>
  </div>
</div>
